package nl.mineleni.openls.parser;
   
   import java.util.Stack;
   
   import javax.xml.parsers.ParserConfigurationException;
   import javax.xml.parsers.SAXParser;
   import javax.xml.parsers.SAXParserFactory;
   
   import nl.mineleni.openls.XmlNamespaceConstants;
  
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import org.xml.sax.SAXException;
  import org.xml.sax.helpers.DefaultHandler;
  
  /**
   * gedeelde code voor OpenLS parsing.
   * 
   * @author prinsmc
   *
   */
  public abstract class AbstractOpenLSParser extends DefaultHandler {
  	/** logger. */
  	private static final Logger LOGGER = LoggerFactory
  			.getLogger(AbstractOpenLSParser.class);
  
  	/** val buffer. */
  	protected StringBuffer eValBuf;
  
  	/** SAX parser. */
  	protected SAXParser parser;
  
  	/** object stack. */
  	protected final Stack<XmlNamespaceConstants> objStack = new Stack<>();
  
  	/**
  	 * Instantiates a new open ls parser.
  	 */
  	public AbstractOpenLSParser() {
  		final SAXParserFactory factory = SAXParserFactory.newInstance();
  		factory.setValidating(false);
  		try {
  			this.parser = factory.newSAXParser();
  		} catch (final ParserConfigurationException | SAXException e) {
  			LOGGER.error("Configureren of maken van de saxparser is mislukt: ",
  					e);
  		}
  	}
  
  	/*
  	 * (non-Javadoc)
  	 * 
  	 * @see org.xml.sax.helpers.DefaultHandler#characters(char[], int, int)
  	 */
  	@Override
  	public void characters(final char[] ch, final int start, final int length)
  			throws SAXException {
  		this.eValBuf.append(ch, start, length);
  	}
  
  }